Compilare: user.cpp: In function ‘int main()’: user.cpp:27:19: warning: unused variable ‘k1’ [-Wunused-variable] int k2=strlen(s2),k1=strlen(s1); ^ user.cpp:16:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("strmatch.in","r",stdin); ^ user.cpp:17:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("strmatch.out","w",stdout); ^ user.cpp:23:9: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s2); ^ user.cpp:24:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%c",&endLine); ^ user.cpp:25:9: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s1); ^ user.cpp:41:20: warning: ‘nrr2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (nrr1==nr1&&nrr2==nr2){ ^ user.cpp:41:9: warning: ‘nrr1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if (nrr1==nr1&&nrr2==nr2){ ^ /tmp/ccWpiGcT.o: In function `main': user.cpp:(.text.startup+0x6d): warning: the `gets' function is dangerous and should not be used.